Title:
HIGH CORROSION-RESISTANCE STRIP STEEL AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/143661
Kind Code:
A1
Abstract:
Disclosed is a high corrosion-resistance strip steel, comprising a carbon steel base layer and a corrosion-resistance cladding layer roll-bonded with the carbon steel base layer, the corrosion-resistance cladding layer being austenitic stainless steel or pure titanium, the thickness of the corrosion-resistance cladding layer being 0.5% to 5% of the total thickness of the strip steel. In addition, further disclosed is a manufacturing method for the described high corrosion-resistance strip steel, comprising the steps of: (1) obtaining a base layer material and a cladding layer material; (2) assembling billets (3) pre-heating: pre-heating the billets at a temperature of 1150°C to 1250°C, so that elements of the corrosion-resistance cladding layer and elements of the carbon steel base layer diffuse at the interface to form a stable transition layer, and then slowly cooling to room temperature; (4) secondary heating and rolling; and (5) water-cooling and then winding. The high corrosion-resistance strip steel finally provides, by means of rational component design, thickness design, and process design, the obtained steel plate or steel strip with a high corrosion-resistance surface and good interlayer bonding performance, and the steel plate or steel strip has good mechanical properties and processability.
Inventors:
YAN BO (CN)
JIAO SIHAI (CN)
JIAO SIHAI (CN)
Application Number:
PCT/CN2021/071186
Publication Date:
July 22, 2021
Filing Date:
January 12, 2021
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C22C38/02; B21B1/22; B21C37/02; B32B15/01; B32B15/18; C22C38/04; C22C38/06; C22C38/12; C22C38/14; C22C38/42; C22C38/44; C22C38/46; C22C38/48; C22C38/50; C22C38/54; C22C38/60
Foreign References:
| CN108085585A | 2018-05-29 | |||
| CN109108071A | 2019-01-01 | |||
| CN109306436A | 2019-02-05 | |||
| CN110499453A | 2019-11-26 | |||
| CN108580555A | 2018-09-28 | |||
| JPH06235050A | 1994-08-23 |
Other References:
See also references of EP 4092151A4
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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